Why Do We Get Seasick

We can suffer motion sickness when we go boat diving because we stand on a moving platform. The sensation befuddles the brain.

Our central nervous system receives data from two areas. Our inner ear (balance) and from our senses (pressure and sensory receptors in our joints, muscles and spine). The CNS gets confused by the mismatch of information. "My feet say that I am stationary on solid ground, yet my eyes and ears tell me that I am rocking and rolling." The result? One disorientated brain and subsequent vomiting.